diff --git a/tools/normalize_path.py b/tools/normalize_path.py
index 6c4d548..363df1f 100755
--- a/tools/normalize_path.py
+++ b/tools/normalize_path.py
@@ -22,8 +22,8 @@
 
 if len(sys.argv) > 1:
   for p in sys.argv[1:]:
-    print os.path.normpath(p)
+    print(os.path.normpath(p))
   sys.exit(0)
 
 for line in sys.stdin:
-  print os.path.normpath(line.strip())
+  print(os.path.normpath(line.strip()))